package org.apache.rocketmq.remoting.jinggo.lg.ch09;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.FixedLengthFrameDecoder;

/**
 * @version 1.0.0
 * @Author wangyj
 * @Description writeAndFlush 事件传播分析
 * @Date 2021/1/19
 */
public class EchoServer {

    public void startEchoServer(int port) throws Exception {

        EventLoopGroup bossGroup = new NioEventLoopGroup();
        EventLoopGroup workerGroup = new NioEventLoopGroup();

        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(bossGroup, workerGroup)
                    .channel(NioServerSocketChannel.class)
                    .childHandler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        public void initChannel(SocketChannel ch) {
                            ch.pipeline().addLast(new FixedLengthFrameDecoder(10));
                            // 响应结果编码器 ResponseSampleEncoder 用于将服务端的处理结果进行编码
                            ch.pipeline().addLast(new ResponseSampleEncoder());
                            ch.pipeline().addLast(new RequestSampleHandler());
                        }
                    });
            ChannelFuture f = b.bind(port).sync();
            f.channel().closeFuture().sync();
        }finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }
    }

    public static void main(String[] args) throws Exception {
        new EchoServer().startEchoServer(8088);
    }
}
